Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb1f7cf346b6970…

MALICIOUS

PDF

96.1 KB Created: 2021-07-21 05:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cd84bdc4869f9a2e06d7b0dc8586d829 SHA-1: 6de1e4c0a889dfbe7474fd95960970fdcf7455bd SHA-256: feb1f7cf346b6970dd4b7cdd1fd7e44e0e18dfc15a108a58313344b7fb0ac0e3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS upload storage, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e9481d6ebca---24889195111.pdf In PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/0tdme456qnlp6ftkhhcsdr5iuf/lojijurelevabilijupitiba.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/95261303184.pdfIn PDF document text
    • http://arcadia1973reunion.com/clients/3/33/33cb7023d77084166ed027ca16b579b7/File/66745156613.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160942dd2d3b0d---69617560093.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/fujuzoxuwojolajagonazanik.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/87102706096.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/62601753230.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d80b7d46c6---ruferelibodomarodogirili.pdfIn PDF document text
    • http://megat.pl/uploaded/fck_files/file/wamupamatejowuxejipod.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/15475602500.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c96a26362cd---renujizasotibudu.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/806ad622d97e8a23d379f2693c3b4568/52974015993.pdfIn PDF document text
    • http://hyeminshop.com/DATA/files/lokofozeximodu.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/na1atev6m07qrf9iaa4rlld6tm/zejipofavemegesererudorek.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/11119758713.pdfIn PDF document text
    • http://carlaschroyen.com/content_docs/49849500481.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/wolenudegizugigirag.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/45989477822.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087bb71bf243---gazotizulamoladexuje.pdfIn PDF document text
    • http://asr-net.ru/uploads/files/8752285726.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=agatha+christie+the+mysterious+affair+at+styles+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DB 3032 bytes
SHA-256: 594ecc98562946b829abfcfb1faf2b3a2fa8f2b6ac3cf2ed5c8f28f420954bdd
font_01_sfnt_off00010513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10513 23360 bytes
SHA-256: 3ba4182a3696e7ad85c101f661504756fe69e7b10f5826baaa5602e46f560b3f
font_02_sfnt_off00013dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DC1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000155d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155D8 11160 bytes
SHA-256: 88f8f19c6def062c2d11ae24a7e7b9602ca24d35fe2248f089e6ccc2d4609727

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